Truck-bolster.



No. 828,870. PATENTBD AUG. 21,1908

BARBER & E. W. WEBB. TRUCK BOLSTER. APPLICATION FILED DI10.19,1905.

8 SHEETSSHEET 1.

Nd. 828,870. PATENTED AUG. 21, 1906. L. W. BARBER & E. W. WEBB.

TRUCK BOLSTER.

APPLIOATION FILED nn0.1a,19oa.

3 BHEBTSSHEET 3.

Way

n4: NcRius PETERS co., WASNINGYUN. a, c.

i E l UNITED STATES PATENT OFFICE.

LEE VV.- BARBER AND EDWIN W. WEBB, OF CHICAGO, ILLINOIS, ASSIGNORS TO AMERICAN STEEL FOUNDRIES, OF NEWARK, NEW JERSEY, A CORPORATION OF NEW JERSEY.

THUCK-BOLSTER.

Specification of Letters Patent.

Patented Aug. 21, 1906.

Application filed December 19,1905. Serial No. 292,431.

To all whom it may concern.-

Be it known that we, LEE W. BARBER and EDWIN W. WEBB, citizens of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Truck- Bolsters; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to metallic truckbolsters, and has for its object to improve the same in the several particulars hereinafter mentioned.

The invention consists of the novel devices and combinations of devices hereinafter described, and defined in the claims.

The invention is illustrated in the accompanying drawings, wherein like characters indicate like parts throughout the several views.

Referring to the drawings, Figure 1 is a plan view of the improved bolster. Fig; 2 is a view princi ally in side elevation, ut partly in vertica section, on the line 11: m of Fig. 1. Fig. 3 is a detail in bottom lan view, showing one end of the truck-b0 ster with some parts removed, with some broken away, and with some sectioned. Fig. 4 is a vertical section taken on the line m w of Fig. 3, but with the tension member and lockblock removed. Fig. 5 is an end elevation of the bolster-body shown in Fig. 4. Fig. 6 is a bottom plan view of the lock-block removed from working position. Fig. 7 is a plan view with some parts broken away, showing one end of a truck-bolster of slightlymodified construction; and Fig. 8 is a section taken on the line a x of Fig. 7.

The preferred construction illustrated in Figs. 1 to 6, inclusive, will first be described. The body or compression member of the bolster illustrated in the views noted is in the form of a cast-steel channel-bar 1, and the tension member is in the form of a flat steel bar 2. A strut or center post 3 of suitable construction is interposed between the central portions of the said members 1 and 2, and the said member 1 is provided with a suitablecenter-bearing 4. Lock-blocks 5 are arran ed to interlock with the end portions of ti e compression member 1 and are;

themselves arranged to be held in working positions by the end portions of the tension member 2. The compression member 1 is formed with box-like ends having inclined upper internal bearing-surfaces 6, lower bearing-flanges 7 and 8, and end notches 9, which atter are formed in the vertical side webs of the said member 1.

The ends of the tension member 2 are passed through the box-like ends of the member 1 and are pressed against the inclined bearing-surfaces 6 thereof by the lock-blocks 5. These lock-blocks 5, it will be noted, are wedge-shaped and are of such size that they fit snugly within the box-like ends of said member 1 and rest u on the bearing-flanges 7 and 8. The locklocks 5 at their outer ends and side portions are formed with rojectin lock-lugs 10, that fit in the notches 9 in the ends of the member 1 and are provided with forwardly-extended portions 10*, that overlap the side webs of the compression member 1 adjacent to said notches 9 and prevent spreading of the said flan e.

At the si ies of their inner portion the blocks 5 are formed with stop-flanges 5, that are adapted-to engage with stop-flanges 7 of the compression member 1 to thereby positively limit the rearward movements of said blocks. After the lock-blocks 5 have been placed in working positions the ends of the tension member 2 are bent down over and against the outer end webs of the said pressed inward, and when pressed inward 100 they press the ends of the tensionmember with increased force against the inclined bearing-surfaces 6 of the compression member 1. For additional strength and safety it is, however, desirable and probablynecesr05 sa ry to rivet the ends of the tension member 2 t the lock-blocks 5. However, the wedge action of the lock-blocks and the downturned ends of the tension member greatly reduce the shearing action upon the rivets,

and consequently the number of rivets or silmilar devices which it is necessary to em- A bolster constructed as above-described, while very strong and durable, is cheap to construct and may be very quickly put together.

In the modified construction illustrated in Figs. 7 and.8 the compression member 1 is in the form of a rolled channel-bar, and the lock-block 5 isriveted to the flanges of'said member 1 and has at its outer portion laterallyrojecting L-shaped lock-lugs that over ap the end portions of the depending flanges of said'channel-bar 1 and also overlie a portion. The horizontalweb of the com+ pression member 1 is slit at its ends and turned upward at 1*. A spacing-block 12 is interposed between the tension member 2 and the overlying web of the member 1 and is riveted' to the latter. Rivets 13 and 14 secure together the parts 5, 2, 12, and 1 The numeral 1'5- indicates side bearings ap plied on the end portions of the compression member 1, which form no part of our inven+ tion andmay be of any suitable construction.

What we claim, and desire to secure by {letters Patent of the UnitedStates, .is as fol ows:

1. In a truck-bolster, the combination withtension and compression members, of lock-blocks seated in the ends of said compression member and removable therefrom only by outward movement, the ends of said tension member being arranged to prevent outward movement of said lock-blocks, when the parts are assembled, substantially as described.

2. In a truck-bolster, the combination with tension and compression members, of wedgeshaped'lock-blocks seated in the ends of said compression member and serving to clamp the ends of said tension member to the ends of said compression member, substantially as described.

3. In a truck-bolster, the combination with compression and tension members, of lock blocks seated in the ends of said compression member and removable therefrom only by outward movement, the ends of said tension member bein bent over the outer ends of the said blocIzs and preventing removal of the blocks, when the parts are assembled, substantially as described.

4. In a truck-bolster, the combination with tension and compression members, of wedge-shaped lock-blocks seated in the ends of said compression member and cooperating with inclined bearing-surfaces in the ends of said compression member, toclamp the ends of said'tension member, the ends ofsaid tension member bein bent down over the outer ends of. said loc -blocksand bei' secured thereto, substantiallyv as describe 5. In a truck-bolster, the combination with a channel-shaped compression-.member and a. fiat tension member, of lockblocks seated in the outer ends offsaidcompression member and removable therefrom only by outward movements, the ends of said tension member being clamped against the ends of said compression member, by said .lockblocks and being turned downward. and-riveted to the outer'ends of'said' lock-blocks, substantially as described.

6. In a truck-bolster, the combination with a compression member having flanged ends, of lock-blocks seated in the flanged ends of said compression member and having projecting side lugs that overlap and embrace the end' flanges of'said compression member, and a tension member passed between said lock-blocks and .the ends of. said compression member and turned downward and secured to the outer portions of said lock-blocks, substantially as described.

In testimony whereof we affix our signa turesin presence of two witnesses.

LEE W. BARBER. EDWIN W. WEBB.

WVitnesses G. EvANs, M. Soor'r. 

